CN108756437A - A kind of construction technology of high-altitude large size assembling shape steel member - Google Patents

A kind of construction technology of high-altitude large size assembling shape steel member Download PDF

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Publication number
CN108756437A
CN108756437A CN201810536371.XA CN201810536371A CN108756437A CN 108756437 A CN108756437 A CN 108756437A CN 201810536371 A CN201810536371 A CN 201810536371A CN 108756437 A CN108756437 A CN 108756437A
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CN
China
Prior art keywords
bracing members
steel
lifting
shape steel
vertical bracing
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CN201810536371.XA
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Chinese (zh)
Inventor
赵林
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江苏省江建集团有限公司
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Priority to CN201810536371.XA priority Critical patent/CN108756437A/en
Publication of CN108756437A publication Critical patent/CN108756437A/en

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/02Structures made of specified materials
    • E04H12/08Structures made of specified materials of metal
    • E04H12/10Truss-like structures
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/34Arrangements for erecting or lowering towers, masts, poles, chimney stacks, or the like
    • E04H12/344Arrangements for lifting tower sections for placing additional sections under them

Abstract

A kind of construction technology of high-altitude large size assembling shape steel member, is related to the technical field of construction of large-scale assembling shape steel member, and interim full framing is set up on ground, completes the assembling of large-scale assembling shape steel member upper body structure;Installation several groups promote pylon temporarily, promote pylon and are fixed on by embedded iron parts on the reinforced concrete foundation of vertical bracing members, and fixed lifter is distributed on each group lifting bracket;Bracing members are segmented and are established, it is promoted by being accumulated to the segmentation of bracing members, realize the lifting to top steel member, large-scale, the great steel member of weight need not be lifted using other heavy lifting equipments, the present invention greatly reduces installation difficulty, has great advantage for quality, safety, duration and construction cost control etc..

Description

A kind of construction technology of high-altitude large size assembling shape steel member

Technical field

The present invention relates to the technical field of construction of large-scale assembling shape steel member, are especially built upon away from ground relatively high level The construction technology of the steel member of high-altitude large size assembling.

Background technology

Certain large-scale assembling shape steel members need to pass through bracing members(Lattice column)Branch is in high-altitude, and the large size assembles shape steel structure Part is again by more than one piece Steel material assembly group, and dead weight is extremely heavy, volume is again huge.

There are two types of the forms of construction work for assembling shape steel member to above-mentioned large size in the past:

A kind of over-the-counter assembly for carrying out Steel material in preparation installation, meanwhile, it is supported in the place of preparation installation(Lattice Column)Construction, assembled good Steel material is hung to bracing members after both formed, then with large-scale suspender(Lattice column)It is upper Side, then fixed being formed between assembled good large-scale assembling shape steel member and steel pile.

Another kind is first to carry out bracing members in the place of preparation installation(Lattice column)Construction, then set up the high-altitudes Man Tang Supporting rack, and the scattered spelling of large-scale assembling shape steel member is carried out above it.

The defect of the first construction method is above:Hyperboloid of revolution rack entirety upper air installing, to hanging device requirement Especially high, security risk is big, and cost is high, and working at height difficulty is big.

And the defect of second of construction method is:Not only assembly, welding job amount be big, site machinery equipment is difficult full Sufficient lifting requirements, and required high-altitude spelling moulding bed is difficult to set up, and there are prodigious safety, quality risks.The difficulty of construction is big, It is unfavorable for the field erected safety, quality of steel construction and the control of duration.

Invention content

Purpose of the present invention is to be directed to disadvantages described above existing for existing construction technology, a kind of material saving, labour-saving high-altitude are proposed The construction technology of large size assembling shape steel member.

The present invention includes the following steps:

1)Interim full framing is set up on ground, completes the assembling of large-scale assembling shape steel member upper body structure;

2)Installation several groups promote pylon temporarily, promote the armored concrete that pylon is fixed on vertical bracing members by embedded iron parts On the basis of, fixed lifter is distributed on each group lifting bracket;

3) the vertical bracing members of first section of the assembled large-scale groups steel loading component in pylon periphery are promoted temporarily in each group, and in first section vertical steel The lower mouth installation of support promotes lifting bindiny mechanism temporarily, passes through bottom between fixed lifter and interim promotion lifting bindiny mechanism Anchor is connected with steel strand wires;By hydraulic synchronizing lifting system, promotion is synchronized to the vertical bracing members of each first section;

4)The vertical bracing members of secondary segment of the assembled large-scale groups steel loading component in pylon periphery are promoted temporarily in each group, by each secondary segment vertical steel Support form stable connection with the vertical bracing members of corresponding first section after, by under the vertical bracing members of first section mouth temporarily carry Hanging load connection mechanism releases, and will promote lifting bindiny mechanism temporarily and be mounted on mouth under the vertical bracing members of secondary segment, then passes through liquid Synchronization lifting system is pressed, promotion is synchronized to the vertical bracing members of secondary first section;

5)Step 4 is repeated)Operation, until steel member to be promoted to the height of design;

6)Most next section of bracing members are formed a fixed connection with ground;

7)Remove temporary towers, lifting bracket and lifter.

The present invention carries out the assembling of steel member on ground, considerably reduces assembling lifting time of steel member, power consumption, again The input of type hanging device.Large-scale assembling shape steel member upper body structure of the invention(More than 700 tons, are not required to vertical wind excitation Carry out steel member structural checking computation under the conditions of the various load cases combinations participated in)First according to building site locality maximum horizontal wind load, use South Korea's Midas's finite element software carries out each operating mode sequential construction analysis under horizontal wind-force, cannot meet each working condition to part The rod piece of lower structure safety requirements is replaced, and is changed section wall thickness into and is increased rod piece, is finally pressed checking computation results and is deepened drawing, on ground Interim full framing is set up in face, and large-scale assembling shape steel member upper body structure is completed by in-depth drawing(Hyperboloid of revolution rack) Assembling, by bracing members(Lattice column)Segmentation establish, first make most the preceding paragraph, make again multiple interludes, finally make it is most lower One section, by establishing lifter on lifting bracket, using lifting bracket as each section of bracing members(Lattice column)Climbing frame, will be segmented Bracing members(Lattice column)It above carries one by one, waits for most next section of bracing members(Lattice column)When the bottom of section is located on ground completely, I.e. mutual sequentially connected each bracing members(Lattice column)Section has reached entire bracing members(Lattice column)Design height.The present invention By bracing members(Lattice column)Segmentation is established, by bracing members(Lattice column)Segmentation accumulation promoted, realize to upper square steel structure The lifting of part lifts large-scale, the great steel member of weight without using other heavy lifting equipments, and the present invention drops significantly Low installation difficulty, has great advantage for quality, safety, duration and construction cost control etc..

In addition, due to the steel member that high-altitude large size assembles shape steel member bracing members that are very big at a distance from ground, therefore designing (Lattice column)It is high, such as only lean on bracing members(Lattice column)Steel member is supported, in the more severe area of weather, as wind, The stability of lattice column cannot be ensured under the conditions of rain, snow etc., therefore in step 6)Implementation process in, also simultaneously each perpendicular To bracing members(Lattice column)Between establish waist truss and sub-truss, to reinforce each vertical bracing members(Lattice column)Between company Connect stability.

Large-scale assembling shape steel member upper body structure of the invention(More than 700 tons are not required to participate in vertical wind excitation various Carry out steel member structural checking computation under the conditions of load cases combination)First according to building site locality maximum horizontal wind load, carry out under horizontal wind-force Each operating mode sequential construction analysis, the rod piece that each working condition lower structure safety requirements cannot be met to part are replaced, change into Section wall thickness increases rod piece, finally presses checking computation results and deepens drawing.Then interim full framing is set up on ground again, by in-depth figure Paper completes large-scale assembling shape steel member upper body structure(Hyperboloid of revolution rack)Assembling.

Description of the drawings

Fig. 1 is the final structure schematic diagram after the completion of present invention construction.

Fig. 2~4 are work progress figure.

Specific implementation mode

Below in the tower 50,000 kilowatts of photo-thermal power generations module secondary reflection tower structural steelwork of somewhere fused salt further Illustrate the present invention.

One, engine request:

As shown in Figure 1, the reflection tower steel construction of design is by the secondary reflection structure 1 positioned at top and three groups of lattices positioned at bottom Column 2 forms, need to also be in waist truss 3, the sub-truss 4 between three groups of lattice columns 2.

Wherein, secondary reflection structure is the above-mentioned steel member of the present invention, by square pyramid space grid and minute surface time structure group At.Secondary reflection tower structure main body is steel construction, and superstructure is hyperboloid of revolution rack, is supported by three lattice columns, hyperbolic It is 33.316m, peak 75.711m, minimum point 64.651m, separately in 34.5m and 17.25m that facial plane, which projects maximum radius, Place sets twice sub-truss.

Top of tower secondary reflection structure is reflected, by bolt-ball net frame and minute surface time structure composition.

Two, detail design thinking:

The maximum installed height mark of hyperboloid of revolution rack is+75.711m, according to bulk-breaking high altitude bulk, not only assembly, weldering Connect heavy workload, site machinery equipment is difficult to meet lifting requirements, and required high-altitude spelling moulding bed is difficult to set up, exist very big Safety, quality risk.The difficulty of construction is big, is unfavorable for the field erected safety, quality of steel construction and the control of duration.

Therefore the present invention is installed using the mode of the present invention of " ground assembling, accumulation fliping lifting ", promotes total weight about 726 tons, hoisting depth about 65m.

Hyperboloid of revolution rack is assemblied into entirety on the ground immediately below its perspective plane, while being arranged using temporary towers Promote platform(Upper suspension centre), interim bracket is set with upper suspension centre corresponding position on the rod piece of hyperboloid of revolution rack lattice column Installation promotes interim suspender(Lower suspension centre), connected with special steel strand wires by special bottom anchor between upper and lower suspension centre.Utilize hydraulic synchronization Lifting system carries out segmentation accumulation to lattice column and is promoted, and completes installation.

The present invention will substantially reduce installation difficulty, advantageous in quality, safety, duration and construction cost control etc..

Three, construction procedure:

1, hyperboloid of revolution rack is from great(More than 700 tons are not required under the conditions of the various load cases combinations participated in vertical wind excitation Structural checking computation is carried out, according to building site locality maximum horizontal wind load, is carried out under horizontal wind-force using South Korea's Midas's finite element software Each operating mode sequential construction analysis, the rod piece that each working condition lower structure safety requirements cannot be met to part are replaced, change into Section wall thickness increases rod piece, finally presses checking computation results and deepens drawing.

2, interim full framing is set up on ground, hyperboloid of revolution rack secondary reflection structure is completed by in-depth drawing(Rotation Turn hyperboloid rack)Installation site perspective plane immediately below interim full framing on assembled square pyramid space grid and minute surface Secondary structure organizes the integral secondary reflection structure promoted, and the bottommost of the secondary reflection structure of formation is away from ground 1255mm.

3, using temporary support pylon, with three groups of lifting brackets 5 of center symmetric setting of secondary reflection structure, and each Two groups of lifting devices 6 radially are installed respectively on lifting bracket.

Hydraulic synchronizing lifting system equipment, including hydraulic pump source system, lifter, biography are installed in each group lifting device 6 Sensor etc..

4, the first section lattice column 2-1 that height is 4.9m, every section of lattice are established correspondingly three groups of 5 peripheries of lifting bracket Column 2-1 should be coaxial with the position for the group entirety lattice column 2 that the high-altitude large size of design assembles shape steel member.

And be welded with secondary reflection structure bracket 7 in the upper ends first section lattice column 2-1, then by three groups of brackets 7 respectively with it is corresponding Secondary reflection structure 1 form fixed welding.

The results are shown in Figure 2 for formation.

5, lifting rope connector is installed in the lower end of lattice column 2-1, and by lifting rope one end of lifter and the lifting rope connector It is connected firmly.

According to the 20% of design load, 40%, 60%, 70%, 80%, 90%, 95%, 100% sequence multistage loadings, until passing through Lifter also has gone up each first section lattice column 2-1 Synchronous liftings to the upper end of lifting bracket 5, at this time secondary reflection structure 1 4.9m。

1 lower part of secondary reflection structure is padded with sleeper etc., pause is promoted, then is finely tuned each of secondary reflection structure 1 and hung The absolute altitude of point is at level, and stands 4~12 hours.

6, second segment lattice are coaxially established one by one in the lower section of three sections of each first section lattice column 2-1 again in 5 periphery of lifting bracket The length of structure column 2-2, second segment lattice column 2-2 are 10350mm, and by second segment lattice column 2-2 and corresponding first section lattice column 2-1 welds to form stable connection.

In addition, also lifting rope connector need to be installed in the lower end of each second segment lattice column 2-2.

The results are shown in Figure 3.

7, after separating the lower end of the lifting rope of lifter and lattice column 2-1, lifting rope is made to be resetted in lifter, then will be promoted Lifting rope one end of device and the lifting rope connector of second segment lattice column 2-2 are connected firmly.

Then by lifter by second segment lattice column 2-2 Synchronous liftings to the upper end of lifting bracket 5.

8, check again for secondary reflection structure 1 and hydraulic synchronizing lifting interim measure have it is without exception.Confirmation is no different reason After condition, step 7 is repeated, passes sequentially through and establishes the third section lattice column 2-3 that length is 10350mm, the 4th that length is 3450mm Section lattice column 2-4, the 5th section of lattice column 2-5 that length is 10350mm, the 6th section of lattice column 2-6, the length that length is 10350mm The 7th section of lattice column 2-7 that degree is 10350mm and the 8th section of lattice column 2-8 that length is 7979mm is promoted with segmentation accumulation Mode, until secondary reflection structure 1 reaches designed elevation.

Then most lower 8th section of lattice column 2-8 is formed a fixed connection with ground.

Step 8 therebetween, it is also necessary to waist truss 3 and sub-truss 4 are established between three groups of steel piles 2.

As a result see Fig. 4.

9, after entire Practical Completion and test reach design requirement, temporary towers, lifting bracket and lifter is removed, is torn open Except hydraulic lifting device.

Claims (3)

1. a kind of construction technology of high-altitude large size assembling shape steel member, it is characterised in that include the following steps:
1)Interim full framing is set up on ground, completes the assembling of large-scale assembling shape steel member upper body structure;
2)Installation several groups promote pylon temporarily, promote the armored concrete that pylon is fixed on vertical bracing members by embedded iron parts On the basis of, fixed lifter is distributed on each group lifting bracket;
3) the vertical bracing members of first section of the assembled large-scale groups steel loading component in pylon periphery are promoted temporarily in each group, and in first section vertical steel The lower mouth installation of support promotes lifting bindiny mechanism temporarily, passes through bottom between fixed lifter and interim promotion lifting bindiny mechanism Anchor is connected with steel strand wires;By hydraulic synchronizing lifting system, promotion is synchronized to the vertical bracing members of each first section;
4)The vertical bracing members of secondary segment of the assembled large-scale groups steel loading component in pylon periphery are promoted temporarily in each group, by each secondary segment vertical steel Support form stable connection with the vertical bracing members of corresponding first section after, by under the vertical bracing members of first section mouth temporarily carry Hanging load connection mechanism releases, and will promote lifting bindiny mechanism temporarily and be mounted on mouth under the vertical bracing members of secondary segment, then passes through liquid Synchronization lifting system is pressed, promotion is synchronized to the vertical bracing members of secondary first section;
5)Step 4 is repeated)Operation, until steel member to be promoted to the height of design;
6)Most next section of bracing members are formed a fixed connection with ground;
7)Remove temporary towers, lifting bracket and lifter.
2. the construction technology of high-altitude large size assembling shape steel member according to claim 1, it is characterised in that in step 5)In, Waist truss and sub-truss are established between each vertical bracing members.
3. the construction technology of high-altitude large size assembling shape steel member according to claim 1 or 2, it is characterised in that in step 1) Before, each operating mode sequential construction analysis under horizontal wind-force is first carried out according to the maximum horizontal wind load of construction site, to that cannot meet The large-scale assembling shape steel member upper body structural member of each working condition lower structure safety requirements is replaced, and changes cross-sectional wall into Thickness increases rod piece, finally presses checking computation results and deepens drawing.
CN201810536371.XA 2018-05-30 2018-05-30 A kind of construction technology of high-altitude large size assembling shape steel member CN108756437A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858162A (en) * 2010-04-02 2010-10-13 攀钢集团冶金工程技术有限公司 Inversion construction method of emission tower
CN102877547A (en) * 2012-10-16 2013-01-16 北京市机械施工有限公司 Steel net rack installation method for integrally improving high-altitude moving and positioning
CN103790234A (en) * 2014-01-03 2014-05-14 永升建设集团有限公司 Large-span truss hydraulic multi-point synchronous lifting construction method
CN104213714A (en) * 2014-08-27 2014-12-17 中国建筑第二工程局有限公司 Hoisting point reinforcing structure and hoisting construction method for ultra-large type roof
CN104662290A (en) * 2012-10-16 2015-05-27 马克斯·博格风能股份公司 Supply frame for a tower, tower with a supply frame and method for erecting a supply frame in the interior of a tower
WO2017007338A1 (en) * 2015-07-07 2017-01-12 Kcc Power System As Method of elevating a section of a derrick, related lowering, and apparatus
CN106812328A (en) * 2015-11-27 2017-06-09 天津三建建筑工程有限公司 The overall two step lifting construction methods of a string prestressed steel structure rack with hanging layer
CN107012949A (en) * 2017-05-10 2017-08-04 中国建筑第二工程局有限公司 A kind of method for improving of large-span steel vestibule
CN107989380A (en) * 2016-10-27 2018-05-04 中交三航局第三工程有限公司 Steel truss gallery hydraulic synchronizing lifting construction technique

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101858162A (en) * 2010-04-02 2010-10-13 攀钢集团冶金工程技术有限公司 Inversion construction method of emission tower
CN102877547A (en) * 2012-10-16 2013-01-16 北京市机械施工有限公司 Steel net rack installation method for integrally improving high-altitude moving and positioning
CN104662290A (en) * 2012-10-16 2015-05-27 马克斯·博格风能股份公司 Supply frame for a tower, tower with a supply frame and method for erecting a supply frame in the interior of a tower
CN103790234A (en) * 2014-01-03 2014-05-14 永升建设集团有限公司 Large-span truss hydraulic multi-point synchronous lifting construction method
CN104213714A (en) * 2014-08-27 2014-12-17 中国建筑第二工程局有限公司 Hoisting point reinforcing structure and hoisting construction method for ultra-large type roof
WO2017007338A1 (en) * 2015-07-07 2017-01-12 Kcc Power System As Method of elevating a section of a derrick, related lowering, and apparatus
CN106812328A (en) * 2015-11-27 2017-06-09 天津三建建筑工程有限公司 The overall two step lifting construction methods of a string prestressed steel structure rack with hanging layer
CN107989380A (en) * 2016-10-27 2018-05-04 中交三航局第三工程有限公司 Steel truss gallery hydraulic synchronizing lifting construction technique
CN107012949A (en) * 2017-05-10 2017-08-04 中国建筑第二工程局有限公司 A kind of method for improving of large-span steel vestibule

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